Excavating-machine.



v. A. YOUNGER EXOAVATING MACHINE. APPLIQATIOI FILED SEPT. 4, 1909.

Patented Dec. 6, 1910.

INVE/WUR )Zzuzyer ATTORNEY Patented Dec. 6,1910.

' 3 SHEETS-SHEET 3.

WITNESSES:

A TTORNE I:

UNITED strains Parana. OFFICE.

VERNON A. YOUNGER, OF SAN JOSE, CALIFORNIA, ASSIGNOR TO JOSHUA M. YOUNGER,

OF SAN JOSE, CALIFORNIA.

EXCAVATING-MACHINE.

To all whom it may concern:

Be it known that I, Vnnxox A. Youxonn, citizen of the United States, residing at San Jose, in thecounty of Santa Clara and State of California, have invented certain new and useful Improvements in Excavating-Machines, of which thefollowing is a specification.

This invention relates to the subject of material conveying means for excavations wherein shovels are used for transporting the material, the shovels being connected to cables which. carry them up an incline and cause them to dump their load from the top of said incline.

The principal object of the invention is to provide novel means for automatically dumping the shovels when they reach the top of the incline, and also to provide means for carrying the shovels to the dumping p sition, the operation of said carrying means being automatically reversed after the shovels have dumped their load so that said carrying means will return the. shovels to their original position.

In carrying out the objects of the invention generally stated above it will, of course, be readily understood that the essential features of the inventitm are necessarily susceptible of changes in detailsand structural arrangements, one preferred and practical embodiment of which is shown in the accompanying drawings, wherein-- Figure 1 is a view in side elevation of the improved shovel dumping apparatus. Fig. 2 is a top plan view. Fig. 3 is a vertical sectional view of one of the carriers for automatically operating the mechanism which returns the shovels to their loading position. Fig. 1 is a detail side ele 'ation of one of the shovel dumping devices. Fig. 5 is an end view of the clamping jaws secured to the hoisting cable shown in cross section used with the carriers. FigQG is a cross sectional view of one of the tracks for a carrier. 1

Referring to ."lhl drawingsit will be 'observed that theimproved apparatus has been shown adapted for simultaneously handling two shovels, separate mechanism being provided for each shovel, said mechanisms being duplicates both in construction and operation, and therefore a detailed description of one will be sufiicient for a thorough understanding of the invention.

Specification of Letters Patent.

Application filed September 4, 1909.

Patented Dec. 6, 1910.

Serial No. 516,169.

In said drawings the improved shovel dumping apparatus has been shown as composed primarily of a main frame formed of vertical standards 1 which are mounted upon a suitable base 2 which supports an electric Or other motor 3. Said standards 1 support a horizontally arranged platform 4: for the operator or operators to which a ladder 5 or the like leads. The platform 4, is preferably, but not necessarily arranged at the front of the skeleton frame formed of the said standards, the tdp connecting members (5, and the base A beam support 7 is arranged slightly above and at the rear of the operators platform 1 for a shaft 9 which is provided with a pulley 10 having a belt connection 11 with the motor Said shaft' 9, as shown in Fig. 2, is provided with four drums, which are arranged in pairs, the members of the pairs being designated by the numerals 12-13, respectively. Said drums are loose on the shaft 9. The inner end of the hub of each drum carries a clutch section 14 which is adapted to engage a clutch member or section 15 rotatable with, but longitudinally movable on, said shaft 9, to lock the selected drum to said shaft, in a well hnown nanner.

The clutch sections 15 are provided with a lever 16 the forward portion of which is pivotally connected with a cross beam 1'? of the main frame, said beams being provided with racks 18 for engagement with the pawls 19 of said levers, said pawls being arranged adjacent the handles 20 of said levers so that said levers and pawls may be manually manipulated from the operators platform 1. A slideway 21 is supported on an incline by said main frame, said slideway extending from the front to the rear thereof, and is p.0vided with guard flanges 22 at its longitudinal edges and is also centrally divided by the diverging flanges 23 to provide two runways which guide the shovels to the tilting platforms 24:. Said tilting platforms are normally supported in alinement with their respective runways by means of the front and rear arms 2526, the front arms 25 having their upper ends pivotally con nected to the outer. end of said platforms and their lower ends pivotally connected to a cross beam 27 of the main frame. The rear arms 26 have their upper ends pivotally connected to standards 28 at the inner end of the platforms 2 1, said arms crossing the arms and having their lower ends pivotally connected to the beams 29 which are end is normally locked. to the slideway 21 by means of the spring pressed pin 30 mounted in a tubular guide 31 normally held in engagement with the'lip 32 projecting from said beveled end. The standards 28 carry a pivotally mounted tripping lever 33 the lower end of which is in contact with said pin 30 and the upper end of which is in the path of movement of the inner end of the handle 34: of the shovels 35, so that when said handle contacts with said lever, it will be rocked on its pivot to force the pin 30 from engagement with the lip 32, whereupon the weight of the shovel will cause the platform to rock upon its supporting arms 25-26 and drop to the position indicated by dotted lines in Fig. l.

A beam 36 is supported by the main frame centrally above each runway of the inclined slideway. 21, each of said beams having its upper end extended Well beyond theupper end of said slideway, and are connected by the-crossbeam 37. Each beam is provided with a pendent track 38 preferably of an inverted Tshape, the base flange of which is engaged by the upper and lower rollers 39-%O of the carriers 41. The bottom sur face of said base flange carries a pendent lug which engages the notch d8 of a pivotally mounted cam t t mounted in said carrier. Said cam tt is normally held in engagement with said lug 42 by the cam 45 pivotallymounted in the lower portion-of said carrier 4 1, said cam 45 being provided with a bifurcated lower end 46 which is in the path of movement of a pair of jaws 4E7 detachably held in clamping engagement with a hoisting cable d8 by means of the bolts 49, so that when said cam 45 is rocked by contact with said jaws, the cam 45 will be disengaged from the lug 42 whereupon said carrier will move with said cable. Guide rollers 50-51 are provided in the base of the carrier for the cable 48.

The cross beam 37 carries two oppositely projecting pivotally mounted tripping levers the outer ends of which project across the tracks 38 and are in the path of movement of the carriers ll. Each lever has a rod connection 51-) with a bell-crank lever at mounted on the cross beam 17 which in turn has a rod connection with the pawl 19 of levers 16, so that when the lovers 38 are ropked by contact with a carrier, the levers 16 will be rocked. to automatically shift the clutch section 14 from one drum to the adjacent drum.

being employed for each drum. The cables 48 which cooperate with the drums 12 for hoisting the shovels, have one end fastened to said shovels, said cables passing through the carriers and over a pendent pulley 56 at the outer end of the tracks 38, and from said pulley the cables extend to and wind about the drums 12. The cables 57 which cooperate with the drums 13 to return the shovels to their loading position have one end fastehed to the rear of the shovels and pass through an anchored block or pulley (not shown) and are then extended to and through a pendentpulley or block .58 In the top of the main frame and from said pulley 58 to the drums 13 and are wound thereon in a direction opposite to that which the cables 48 are wound upon the drums l2.

Incidental details may be employed in connectionvwith the drums 1213 such as a counterweight 59 for balancing the shifting levers of the clutch sections let and a pivotally mounted lever 60 carrying a roller (51 for pressing'on the cables wound upon the drums to properly space the convolutions thereof. 7

It will be seen from the foregoing that when a shovel is about to enter its runway, the jaws of the hoisting cable will contactwith and carry the carrier-41 along the track 38 so that when said shovel reaches the tilting platform and is dumped thereby, the carrier will be in contact with the tripping lever which shifts the clutch section from the'hoisting drum 12 to the lowering drum 13, so that the shovel will be automatically returned to its leading position by said drum 13 and cable 57. \Vhen the shovels have been returned to their load ing position, the clutch section 14 is manually shifted from drum 1-3 to the idle position indicated at the right hand side of Fig.

'2 until the shovels are loaded, after which said clutch section is further shifted to engage with drum 12. 7

VV-hat I claim as my invention is 1. A device of the character described comprising a slidewa'y; raising and lowering drums "arried by said slideway, separate cables for "each drum, shovels connected to said cables, shovel dumping means at one end of said slideway, tracks carried by said slideway, a carrier mounted on each track, and means carried by the cables of the hoisting drums for causing said carriers to render :'z" h isting drums idle and the lowering (if! as active after the shovels have been dumped.

2. A device of the character described comprising a slideway provided with runways, a raising and a lowering drum for each runway, shovel dumping means at one end of eachruhwa'y, a cable for each drum, a shovel connected to the cable of each raising and lowering drum, a track arranged above each runway, a carrier on each track means carried by the hoisting cables for engaging with said carriers, shovel dumping means at thenpper end of each runway, and tripping mechanism actuated by said carriers for rendering the raising drums idle and the lowering drums activeafter the shovels have been dumped.

3. A device of the cha'acter described, comprising a slideway provided with runways, a track supported above each run; way, a carrier normally fast on said track, raising and lowering drums for-each runway, a cable for each drum, ashovel connected to the cable of the drum of each runway means carried by the hoisting cable for releasing the carrier from the track, and

with runways, a raising and a lowering drum for each runway, a shaft on which said drums are loosely mounted, a slhlable nectcd to the cables of the raising and the lowering drums, a shovel dumping platform carried by each runway, a track supported above each runway. a carrier on each track, tripping mechanism at the upper end of said tracks connected with said clutches, and means carried by theeh'oisting cables for engaging with said carriers to cause the same to actuate the tripping mechanism after the shovels have been dumped and thereby cause said clutches to release the raising drums and engage with the lowering drums.

In testimony whereof, I afiix my signature in presence of two witnesses.

VERNON A. YOUNGER. Witnesses:

J. M. YOUNGER, H. C. SCI-IROEDER. 

